.layout {
  z-index: 1;
  position: relative;
  display: flex;
  flex-flow: column nowrap;
  height: 100vh;
  background-color: transparent;

  .header,
  .footer {
    z-index: 1000;
    position: relative;
    display: flex;
    width: 100vw;
    height: 6%;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.6);
    -webkit-backdrop-filter: blur(3px);
    backdrop-filter: blur(3px);
  }

  .middle_content {
    flex: 1;
    display: flex;
    position: relative;
    justify-content: center;
    align-items: center;
    height: 88%;
  }
}

#mainAudio {
  display: none;
}

.phone_mask {
  display: none;
  text-align: center;
}

@media screen and (max-width: 992px) {
  .phone_mask {
    z-index: 5000;
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-flow: column nowrap;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
    padding: 1rem;
    color: #fff;
    font-size: 1.6rem;
    background-image: linear-gradient(#000, #000);

    p {
      font-size: 5rem;
    }
  }
}